Circular saw



FIG. 1 is a perspective view of a circular saw showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a perspective view of a circular saw showing a secondembodiment of my new design wherein a portion of the saw cover istransparent; and,

FIG. 9 is a front elevation view of the circular saw shown in FIG. 8.

The ornamental design for a circular saw, as shown and described.